diff --git a/tmux.h b/tmux.h
index eb62564d..965b7443 100644
--- a/tmux.h
+++ b/tmux.h
@@ -3256,8 +3256,6 @@ void	control_add_sub(struct client *, const char *, enum control_sub_type,
 void	control_remove_sub(struct client *, const char *);
 
 /* control-notify.c */
-void	control_notify_input(struct client *, struct window_pane *,
-	    const u_char *, size_t);
 void	control_notify_pane_mode_changed(int);
 void	control_notify_window_layout_changed(struct window *);
 void	control_notify_window_pane_changed(struct window *);